Tellabs Reston, Inc.
|Tellabs Reston, Inc. Patent applications|
|Patent application number||Title||Published|
|20090185582||Unified data packet for encapsulating data packets having diverse formats - Embodiments of the present invention described and shown in the specification and drawings facilitate the transportation of data packets having diverse formats through a general packet switching system. Due to the diverse formats of the data packets used by various common communications protocols, it is has been difficult to produce general packet switching systems that are able to switch multiple protocols. Embodiments of the present invention provide a Unified Data Packet for encapsulating data packets having diverse formats. Through encapsulation, embodiments of the present invention improve switching system efficiency by providing a single data packet format for handling by the switching system while enabling data packets in diverse formats to pass through the switch.||07-23-2009|
|20090070565||METHODS, SYSTEMS, COMPUTER PROGRAMS AND APPARATUS FOR CHANGING A PROCESSOR STATE - Methods, systems, computer programs and apparatus for changing a processor state. In example embodiments of the invention, software porting onto an operating system calls a library routine, which creates an illegal instruction for special values in parameter registers. An illegal instruction exception handler recognizes the illegal instructions for special values in parameter registers, and, upon detecting the illegal instruction, enables or disables an interrupt state of a CPU associated with the system.||03-12-2009|
|20080297364||Method and apparatus to ensure activation of a power distribution alarm monitoring circuit - Redundant load sharing power supplies may use lower amperage pilot fuses to monitor the condition of higher amperage main line fuses carrying load current. An alarm monitoring circuit is activated when the pilot fuse has blown. The load sharing characteristics of these supplies may proportion current such that the pilot fuse may not be blown when the main line fuse is missing or blown. An embodiment of the present invention provides a system for ensuring activation of a power distribution alarm monitoring circuit in a load sharing power application using multiple loads to draw current from the power inputs. A control circuit enables current to flow in a controlled manner to blow the pilot fuse to ensure activation of a power distribution alarm monitoring circuit. Ensuring activation of the alarm monitoring circuit allows accurate identification of a faulty supply and satisfies a required operations condition of many telecommunications systems providers.||12-04-2008|
Patent applications by Tellabs Reston, Inc.